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Directly from the manufacturer
Your testo 440 custom kit in just 3 steps
The first step is to decide whether your testo 440 should have an integrated differential pressure sensor or not.
Our tip: Take advantage of an integrated differential pressure sensor to make your climate measuring instrument truly multifunctional. This will allow you to carry out Pitot tube or k-factor measurements flexibly, for example.
Please note that it is not possible to retrofit the differential pressure sensor.
Our testo 440 kits for the ‘Flow / Volume flow’ application area
Our testo 440 kits for the ‘Indoor air / Comfort level’ application area